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Coupled analysis of building damage due to tunneling

Author: Giardina, G. · Hendriks, M.A.N. · Rots, J.G.
Faculty:Civil Engineering and Geosciences
Department:Structural Engineering
Type:Article in monograph or in proceedings
Date:2009-06-17
Publisher: TU Delft
Source:Proceedings of the Workshop on Computational Modeling on Concrete, Masonry and Fiber-reinforced Composites, Delft, The Netherlands, 17-18 June 2009
ISBN: 978-94-90284-03-9
Keywords: damage assessment · masonry building · tunneling
Rights: (c) 2009 Delft University of Technology

Abstract

Excavation works in urban areas require a preliminary risk damage assessment. In historical cities, the prediction of building response to settlements is necessary to reduce the risk of damage of the architectural heritage. The current method used to predict the building damage due to ground deformations is the Limiting Tensile Strain Method (LTSM) [3]. This method is based on an uncoupled soil-structure analysis, in which the building is modelled as an elastic beam subject to imposed greenfield settlements and the induced tensile strains are compared with a limit value for the material. This approach neglects many factors which play an important rule in the response of the structure to tunneling induced settlements. In this paper, the possibility to apply a settlement risk assessment derived from the seismic vulnerability approach [1] is considered. The parameters that influence the structural response to settlements can be defined through numerical coupled analyses which take into account the nonlinear behaviour of masonry and the soil-structure interaction.

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